Progesterone levels vary depending on when the test is done. Blood progesterone levels start to rise midway through the menstrual cycle. It continues to rise for about 6 to 10 days, and then falls if the egg is not fertilized.
Levels continue to rise in early pregnancy.
This following are normal ranges based upon certain phases of the menstrual cycle and pregnancy:
- Female (pre-ovulation): less than 1 ng/mL
- Female (mid-cycle): 5 to 20 ng/mL
- Male: less than 1 ng/mL
- Postmenopausal: less than 1 ng/mL
- Pregnancy 1st trimester: 11.2-90.0 ng/mL
- Pregnancy 2nd trimester: 25.6-89.4 ng/mL
- Pregnancy 3rd trimester: 48-150 to 300 or more ng/mL
Note: ng/mL = nanograms per milliliter
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.